Rolling forge-bars



(No Model.) M J. GUEST.

ROLLING FORGE BARS No. 416,675. Patented-Dc, s. 1889.

UNITED STATES PATENT OFFICE.

JOSEPH GUEST, OF PITTSBURG, PENNSYLVANIA.

ROLLING FORGE-BARS.

SPECIFICATION forming part of Letters Patent No. 416,675, dated December3, 1889.

Application filed May 13, 1889. Serial No. 310,577. (No model.)

To aZZ whom it'may concern:

Be it known that I, JOSEPH GUEST, of Pittsburg, in the county ofAllegheny and State ing drawing, which forms part of this specification.I

My invention relates to an improved method of rolling forge-bars; and itconsists in taking the ball as it comes from either the squeezer or thehammer and passing it a suitable number of times between horizontal andvertical rolls, turning the pieceonequarter round, and passing itthrough sidewise as often as may be necessary to keep the piece nearlysquare, the vertical rolls acting to square up the ends and edges, whilethe horizontal rolls act to reduce in thickness and spread the metal outuntil the piece is of nearly even density throughout, as will be morefully described hereinafter.

The object of my invention is to so treat the ingot or puddle-ball thatboth its ends and sides will be square and true, and thus make aforge-bar, from a number of which a pile may be made, from which plateor skelp iron can be rolled in ordinary grooved rolls without the usualexcessive loss in shearing, the edges of these forge-bars being so goodthat the metal in the finished plate will be sound and good clear uptothe edges.

The accompanying drawing represents a side elevation of a mill forrolling the forgebars.

A A represent a pair of horizontal rolls, and B B a pair of verticalrolls placed in any desired relation thereto, and which vertical rollsare laterally adjustable according to the width and length of theforge-bars which are being made, the horizontal rolls also beingadjustable in the usual manner.

In carrying my process into execution I take the puddle-ball or ingotdirectly from the squeezer orhammer and pass it between 5 the horizontalrolls A A a suitable number of times until its length has becomeslightly greater than the width it is to have as a finished forge-bar. Ithen turn the piece of metal one-quarter around and again pass itbetween the rolls A A, which increases the length of the piece somewhatat the same time that the vertical rolls B B roll itsedges and decreaseits width. The bar thus formed is passed again and again through the twosets of rolls A A B B, turning it as often as the piece becomes longerthan the distance between the vertical rolls, until both its ends andits edges are trued up, the thickness of the bar being decreased by thehorizontal rolls only sufficiently to fill out the corners and make thebar of the required size. This thickness will vary with the weight ofthe metal in the puddle-ball or ingot, so that while notwo of theforge-bars will be of exactly the same thickness, they will have theiredgesand ends trued up alike and be of the same size. A number of theforge-bars may then be piled one upon the other and passed through rollsof ordinary construction, so as to be manufactured into any desiredform.

I-Ieretofore in the manufacture of forgebars the metal has been passedagain and again through the rolls, and very ragged ends and edges havebeen the result, the iron being rolled to a regulated thickness. casesthe rolls have been provided with grooves which true the edges of thebar; but these grooves do not trim the ends and the width of the bars isvery limited, seldom over fifteen inches. By the process here described,however, the sides and edges. are worked upon at the same time that thebar is being reduced in thickness. As the bar is not elongated to anygreat extent, the passes through the rolls are very short, and thus avast amount of time and labor is savedin forming the bar, while the sizeof the bar is only limited by the length of the horizontal rolls. Thethickness depends entirely upon the weight of metal in the ingot orpuddleball. I

.Having thus described my invention, I claim The process hereindescribed of rolling In some forge-bars, consisting in passing apuddle-ball In testimony'whereof I affix my signature in or ingotbetween horizontal and vertical rolls, presence of two Witnesses.turning the piece one-quarter round as often as it maybe necessary tokeep its length and JOSEPH GUEST. 5 breadth nearly equal, the horizontalrolls actlVitnesses:

ing' to reduce the thickness, While the vertical H. H. SALLADE,

rolls act to square up and finish the edges, F. E. YOUNGS. substantiallyas described. I

